IOWA CITY, Iowa (AP) — Iowa football strength and conditioning coach Chris Doyle has been placed on administrative leave after several black former players posted on social media about what they described as systemic racism in the program.

Head coach Kirk Ferentz made the announcement Saturday night and called it “a defining moment” for Iowa’s football program in a video posted on the team’s Twitter account. Ferentz said he saw difficult and heartbreaking posts on social media and appreciated the former players’ candor. He added that he has been reaching out to many of them individually to hear more about their experiences in our program.

Dozens of former players took to social media in the past few days to detail the troubling issues they allege they saw and experienced while playing at Iowa.